Alan Fraser, thanks a lot, it helps.

Hi there, I'm new here and begginer at SketchUp too. I'm Russian, so in advance sorry for my English.

I set out to make a model of my desk calculator. Now I'm at stage, where I need to put digits and latters on faces of buttons. But I met some difficulties, as I'm trying to create curves of latters by pulling them down on the button's faces, then I make "Explode", expecting that there will be new curves, but nothing. What I'm doing wrong? Here is a picture, that explaining better than my words.